Prebid Core: Fix wrong targeting being applied when multibid module is included

[i-atanasov-az]

Type of change

• Bugfix

Description of change

The refactor of targeting.js introduced in 9.16.0 relies on getHighestCpmBidsFromBidPool returning sorted bids and then when a winning bid should be chosen it simply reduces the sorted bids. The logic in getHighestCpmBidsFromBidPool, though, returns unchanged bids when hasModified is true. But getHighestCpmBidsFromBidPool is hookable and multibid in it's targetBidPoolHook sets hasModified to true when multibid is enabled causing bids not to be sorted and the winning bid chosen for targeting is the first rather than the best bid.

Changes:

• Puts back the logic from before the change to choose the winning bid inside the getWinningBids method instead of choosing the winning bid as the first bid for the ad unit, relying on getHighestCpmBidsFromBidPool returning already sorted bids.
• Changes the logic of getWinningBidTargeting to use getWinningBids instead of reducing the bidsReceived
• Adds adUnitCodes to function interfaces

Other information

prebid#12273